I came across this today. To me it shows that there appears to be no overall plan for the SLS/Orion programme, just a few one-off missions. It should be remembered that Apollo 8 was part of a funded programme for humans to travel to the Moon, while SLS/Orion seems to be no such programme. This proposal will simply do what the Soviets wanted to do with the L-1 programme - have men loop around the Moon and return to Earth: at least Apollo 8 reached selenocentric orbit!